APA (7th ed.) Citation

McBratney, S., & Jeram, A. (2007). Guess how much i love u in the spring. Walker Books.

Chicago Style (17th ed.) Citation

McBratney, Sam, and Anita Jeram. Guess How Much I Love U in the Spring. London: Walker Books, 2007.

MLA (9th ed.) Citation

McBratney, Sam, and Anita Jeram. Guess How Much I Love U in the Spring. Walker Books, 2007.